Question 1

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 2

To graph a relationship that involves more than two variables,we use the "ceteris paribus" assumption.

Accepted Answer

The "ceteris paribus" assumption allows us to focus on the relationship between two variables by assuming that all other variables remain constant, making it easier to graph relationships even when more than two variables are involved.

Question 3

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 4

If the change in the y-axis variable is 6 and the change in the x-axis variable is 5,the slope of this line is 6/5.

Accepted Answer

The slope of the line is equal to the change in the y-axis variable divided by the change in the x-axis variable, which in this case would be 6/5.

Question 5

A cross-section graph can show how economic variables for different groups of people vary over time.

Accepted Answer

The answer of A cross-section graph can show how economic...

Question 6

"Ceteris paribus" refers to the idea that if more than two variables are graphed,only one variable must be held constant.

Accepted Answer

"Ceteris paribus" refers to the idea that all other variables are held constant except for the one being studied, not limited to situations where only one variable changes while more than two are graphed.

Question 7

A scatter diagram plots the value of one economic variable against time.

Accepted Answer

A scatter diagram plots two variables against each other, not against time.

Question 8

-What does the slope of the curved line at point A shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the curved...

Question 9

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 10

To calculate the slope of a curved line,you can calculate the slope at a point on the curve or across an arc of the curve.

Accepted Answer

This is true. The slope of a curve at a specific point is called the instantaneous slope, while the slope across an arc is called the average slope. Both methods can be used to calculate the slope of a curved line.

Question 11

$$\begin{array} { | c | c | } 
\hline \begin{array} { c } 
\text { Hours studies } \
\text { (per week) }
\end{array} & \text { SAT scores } \
\hline 2 & 900 \
\hline 4 & 1000 \
\hline 6 & 1050 \
\hline 8 & 1075 \
\hline 10 & 1090 \
\hline
\end{array}$$ 
 
-Jamie is preparing to take his SAT tests.The table above shows how Jamie's score depends on the number of hours a week Jamie studies.
a) Plot the relationship in the figure,putting the hours studied on the horizontal axis.
b) Is the relationship you plotted positive or negative?
c) What happens to the slope of the relationship as hours studied increase?
d) Suppose Jamie can enroll in an SAT prep course and,by so doing,for every possible number of hours he studies,his score will be 100 points higher.Plot the new relationship between the number of hours studied and Jamie's SAT score in the figure.
e) How many variables are involved in the figure you just completed?

Accepted Answer

The answer of \[\begin{array} { | c | c |...

Question 12

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 13

The slope of a straight line increases as the numbers on the x-axis become larger.

Accepted Answer

The slope of a straight line is determined by the change in y over the change in x (rise over run) and is constant for any straight line, regardless of the values on the x-axis.

Question 14

The slope of a line is the change in the y-axis variable divided by the change in the x-axis variable.

Accepted Answer

This is the definition of slope.

Question 15

When graphed,variables that are unrelated are shown by either a horizontal or a vertical line.

Accepted Answer

The answer of When graphed,variables that are unrelated are shown...

Question 16

A graph cannot be used to show that two variables are unrelated.

Accepted Answer

A graph can show that two variables are unrelated by appearing as a scattered plot with no clear pattern or trend, indicating that there is no correlation or relationship between the variables. However, this does not prove that the variables are truly unrelated, as there may be other factors influencing their relationship that are not captured in the graph. Therefore, it is important to use statistical tests and other methods to support the conclusion that two variables are truly unrelated.

Question 17

If the x-axis variable increases while the y-axis variable decreases,the variables x and y are negatively related.

Accepted Answer

This is the definition of a negative correlation or negative relationship between two variables.

Question 18

If the change in the y-axis variable is 4 and the change in the x-axis variable is 2,the slope of this line is 1/2.

Accepted Answer

The slope of a line is calculated by the change in the y-axis variable divided by the change in the x-axis variable, so in this case, it would be 4/2 = 2.

Question 19

The vertical axis of a graph shows only positive values.

Accepted Answer

The vertical axis of a graph can show both positive and negative values, depending on the data being represented.

Quiz 1: What Is Economics

-What does the slope of the line shown in the above figure equal?

To graph a relationship that involves more than two variables,we use the "ceteris paribus" assumption.

-What does the slope of the line shown in the above figure equal?

If the change in the y-axis variable is 6 and the change in the x-axis variable is 5,the slope of this line is 6/5.

A cross-section graph can show how economic variables for different groups of people vary over time.

"Ceteris paribus" refers to the idea that if more than two variables are graphed,only one variable must be held constant.

A scatter diagram plots the value of one economic variable against time.

-What does the slope of the curved line at point A shown in the above figure equal?

-What does the slope of the line shown in the above figure equal?

To calculate the slope of a curved line,you can calculate the slope at a point on the curve or across an arc of the curve.

-What does the slope of the line shown in the above figure equal?

The slope of a straight line increases as the numbers on the x-axis become larger.

The slope of a line is the change in the y-axis variable divided by the change in the x-axis variable.

When graphed,variables that are unrelated are shown by either a horizontal or a vertical line.

A graph cannot be used to show that two variables are unrelated.

If the x-axis variable increases while the y-axis variable decreases,the variables x and y are negatively related.

If the change in the y-axis variable is 4 and the change in the x-axis variable is 2,the slope of this line is 1/2.

The vertical axis of a graph shows only positive values.